BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 35 42.2%
2 Netherlands 17 20.5%
3 United States 12 14.5%
4 Germany 7 8.4%
5 Australia 3 3.6%
6 Korea, Republic of 2 2.4%
7 Sweden 2 2.4%
8 Canada 1 1.2%
9 France 1 1.2%
10 Hong Kong 1 1.2%
11 India 1 1.2%
12 Russia 1 1.2%